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From: Manikanta Maddireddy <mmaddireddy@nvidia.com>
To: <bhelgaas@google.com>, <lpieralisi@kernel.org>,
	<kwilczynski@kernel.org>, <mani@kernel.org>, <robh@kernel.org>,
	<krzk+dt@kernel.org>, <conor+dt@kernel.org>,
	<thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
	<kishon@kernel.org>, <arnd@arndb.de>,
	<gregkh@linuxfoundation.org>, <Frank.Li@nxp.com>,
	<den@valinux.co.jp>, <hongxing.zhu@nxp.com>,
	<jingoohan1@gmail.com>, <vidyas@nvidia.com>, <cassel@kernel.org>,
	<18255117159@163.com>
Cc: <linux-pci@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	Manikanta Maddireddy <mmaddireddy@nvidia.com>
Subject: [PATCH v8 6/9] dt-bindings: PCI: tegra194: Add monitor clock support
Date: Wed, 25 Mar 2026 00:39:57 +0530	[thread overview]
Message-ID: <20260324191000.1095768-7-mmaddireddy@nvidia.com> (raw)
In-Reply-To: <20260324191000.1095768-1-mmaddireddy@nvidia.com>

From: Vidya Sagar <vidyas@nvidia.com>

Tegra supports PCIe core clock monitoring for any rate changes that may be
happening because of the link speed changes. This is useful in tracking
any changes in the core clock that are not initiated by the software.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
---
Changes V5 -> V8: None
Changes V4 -> V5: Fixed clock description per review comment
Changes V1 -> V4: None

 .../devicetree/bindings/pci/nvidia,tegra194-pcie-ep.yaml    | 6 +++++-
 .../devicetree/bindings/pci/nvidia,tegra194-pcie.yaml       | 6 +++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie-ep.yaml
index 6d6052a2748f..7805757f2e2d 100644
--- a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie-ep.yaml
@@ -55,12 +55,16 @@ properties:
       - const: intr
 
   clocks:
+    minItems: 1
     items:
-      - description: module clock
+      - description: core clock
+      - description: monitor clock
 
   clock-names:
+    minItems: 1
     items:
       - const: core
+      - const: core_m
 
   resets:
     items:
diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
index fe81d52c7277..41041ae7e0a4 100644
--- a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
@@ -58,12 +58,16 @@ properties:
       - const: msi
 
   clocks:
+    minItems: 1
     items:
-      - description: module clock
+      - description: core clock
+      - description: monitor clock
 
   clock-names:
+    minItems: 1
     items:
       - const: core
+      - const: core_m
 
   resets:
     items:
-- 
2.34.1


  parent reply	other threads:[~2026-03-24 19:11 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-24 19:09 [PATCH v8 0/9] Enhancements to pcie-tegra194 driver Manikanta Maddireddy
2026-03-24 19:09 ` [PATCH v8 1/9] PCI: tegra194: Drive CLKREQ# signal low explicitly Manikanta Maddireddy
2026-03-24 19:09 ` [PATCH v8 2/9] PCI: tegra194: Calibrate pipe to UPHY for Endpoint mode Manikanta Maddireddy
2026-03-24 19:09 ` [PATCH v8 3/9] PCI: tegra194: Remove IRQF_ONESHOT flag during Endpoint interrupt registration Manikanta Maddireddy
2026-03-24 19:09 ` [PATCH v8 4/9] PCI: tegra194: Enable DMA interrupt Manikanta Maddireddy
2026-03-24 19:09 ` [PATCH v8 5/9] PCI: tegra194: Enable hardware hot reset mode in Endpoint Manikanta Maddireddy
2026-03-24 19:09 ` Manikanta Maddireddy [this message]
2026-03-24 19:09 ` [PATCH v8 7/9] PCI: tegra194: Add core monitor clock support Manikanta Maddireddy
2026-03-24 19:09 ` [PATCH v8 8/9] arm64: tegra: Add aspm-l1-entry-delay-ns to PCIe nodes Manikanta Maddireddy
2026-03-24 19:10 ` [PATCH v8 9/9] PCI: tegra194: Use aspm-l1-entry-delay-ns DT property for L1 entrance latency Manikanta Maddireddy
2026-04-08 22:30   ` Bjorn Helgaas
2026-04-09  5:56     ` Manikanta Maddireddy
2026-04-09 18:40       ` Bjorn Helgaas
2026-04-10  7:38         ` Manikanta Maddireddy
2026-04-09 18:36   ` Bjorn Helgaas
2026-04-04 15:28 ` (subset) [PATCH v8 0/9] Enhancements to pcie-tegra194 driver Manivannan Sadhasivam

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